Wrench.



No- 836,571. PATENTED NOV. 20, 1906.

0. L. FORTIN.

WRENCH.

APPLICATION FILED AUG. 29, 1906.

UNITED STATES- PATENT OFFICE.

WRENCH.

Specification of Letters Patent.

Patented Nov. 20,1906.

Application filed August 29, 1906. Serial No. 332.494.

To aZZ whom, it may concern.-

Be it known that I, CHARLES L. FORTIN, a citizen of the United States,residing at Ballston Spa, in the county of Saratoga and State of NewYork, have invented certain new and useful Improvements in Wrenches; andI do hereby declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same.

My invent on relates to improvements in wrenches.

It has for its object to provide a wrench which is simple inconstruction, cheap in manufacture, and in which the jaws are soconstructed that they will escape the corners of a nut therein when saidwrench is turned in the reverse direction, whereby said nut may beturned on without removing the wrench therefrom.

The invention consists in the features of construction and combinationsof parts hereinafter described, and more particularly pointed out in theclaims concluding this specification.

In the accompanying drawings, illustrating the preferred embodiment ofmy invention, Figure 1 is a side view of the wrench with its partsassembled. Fig. 2 is a broken longitudinal sectional view taken fromfront to rear. Fig. 3 is a detailed side view of the fixed jaw memberwith the jaw-piece removed. Fig. 4 is a detailed side view of the jawpiece of the fixed jaw member; and Fig. 5 is a side view of the wrenchwith serrated pieces attached to the jaws whereby the wrench is adaptedto be used for gripping and turning articles having smooth surfaces,such as pipe, &c.

Referring more particularly to the drawings, 1 designates the fixed jawmember having the handle Eportion 2. A portion of the rear edge of saidmember is cut away, as at 3, and in the space left thereby is arrangedthe movable jaw 4, which has the edges of its shank threaded at 5. Inthe upper end of said fixed jaw member is formed a transverse slot orgroove 6, which is curved in cross section, said curve constituting thegreater part of a circle.- The jaw-piece 7 has its lower end shaped tofit said groove 6, into which it is inserted from the side. There is anupward projection at the front edge of the jaw member 1, as designatedat 8, which forms a stop for the forward movement of said j awa shoulderor stop 13 on the upper end of the fixed jaw member and is preventedfrom slipping downward by the regulating-nut 14, arranged in slots inthe sides of said cover and also in a recess 15 in the rear face of thefixed jaw member.

The rear corner of the jaw-piece 7 is cut away at 7 so that when saidpiece is rocked forward against the spring as the wrench is turned inthe reverse direction it will escape the corner of a'nut and permit anew grip to be had on said nut without removing the wrench therefrom.When the wrench is turned in the positive direction, said jawpiece willreturn to its normal position and engage the nut. In this way it will beseen that a nut can be completely turned on with out removing the wrenchtherefrom. When grasped by the operator, the regulating-nut will bebetween his thumb and finger, so that the wrench is readily regulated.

Each of the jaws is provided with a socket 16 and 17 respectively,whereby serrated. j aw-pieces 16 and 17 may be secured thereto by pinsor bolts 16 and 17 in order that thewrench may be used for turningsmooth-surfaced articles.

I claim 1. A wrench comprising a fixed jaw member, a movable jaw member,a spring-pressed rocking jaw-piece on the fixed jaw member, and a coverfor retaining the parts assembled.

2. A wrench comprising a fixed aw member, a movable jaw member, arocking jawpiece on the fixed jaw member, said jawpiece having its rearcorner cut away for the purpose specified, and a cover for retaining theparts assembled.

3. A wrench comprising a fixed jaw member, a movable jaw member, ajaw-piece mounted on said fixed jaw member and having a rocking movementwith relation thereto, a spring arranged between the front edge of saidj aw-piece and the fixed jaw member, and a cover for retaining the partsassembled.

4. A wrench comprising a fixed jaw mem her and a movable jaw memberarranged embracing said fixed and movable jaw memher, a movable jawmember, a jaw-piece bar, a movable jaw member, said fixed jaw edge toedge, a jaw-piece mounted on said fixed jaw member and having a rockingmovement with relation thereto, a spring arranged between the front edgeof said jawpiece and the fixed jaw member, and a cover bers for thepurpose specified.

5. A wrench comprising a fixed jaw memmrnber having a transverse groovein its upper end which is curved in cross-section and. constitutes thegreater part of a circle, a jawpiece having a correspondingly-shapedlower end fitted in said groove and having a rocking movement withrelation to the fixed jaw member, a stop to limit the forward movementof said jaw-piece, a spring arranged be- I tween said stop and saidjaw-piece, and a cover to retain the parts assembled.

7. A wrench comprising a fixed. jaw mem her, a screw-threaded movablejaw member arranged parallel thereto, a rocking jawpiece on the fixedjaw member, a cover embracing both aw members and having slots in itssides, a stop for said cover on the fixed jaw, and a re ulating-nutarranged in the slots in the si es of said cover, around thescrew-threaded movable jaw and extending into a recess in the rear edgeof the fixed. j a v member, whereby said. cover and the other parts areretained in place. I

8. A wrench comprising a fixed jaw member, a movable jaw member, aspring-pressed rocking j aw-piece on the fixed jaw member, a

cover for retaining the parts assembled, and

detachable serrated pieces secured. to the aws.

In testimony whereof I a'Hix my signature in presence of two witnesses.

C. L. FORTIN. Witnesses:

ALBERT DE OORA, -JOSE1?H W. KING.

